Means for introducing air into furnaces.



E. Q. BANGS. MEANS FOR INTRODUCING AIR INTO FURNACES.

APPLICATION FILED JULY 30. I915.

Patnted Oct. 9, 1917.

Ddngs Whine Mao troducing Air into Furnaces; andI do herelarly to bydeclare the following to be a full, clear, and exact description'of the invention, such as will enable othersskilled in the art to which it appertain's to make'and use the same." i

My invention relates to means for introducing air into furnaces, andmore particuthat class Where coal is used as fuel. I

-A further-object is to so positiontheattachment that theair'will be introduced into the furnace near the combustion chamber at a point above the fire box.

A further object is to provide means for I distributing the air as the furnace, etc.

And a further object is to provide means for controllingthe introduction of the air.

Other objects and advantages will be hereinafter set forth and more particularly pointed out in theaccompanying specificatlon.

In the accompanying drawings which are made a part of this application,

Figure 1 represents, in side elevation, partly broken away and in section, a furnace provided with my improved means for introducing air.

Fig. 2 represents, in elevation, the inner end of my air introducing pipe section.

Fig. 3 represents, in elevation, the outer end of the same pipe section. I

it' is introduced into Like reference characters mark the same parts in all of the figures.

1 indicates a furnace inclosed by an outer wall 9 and within the furnace is an inner wall h within which are the fire box 2 below and the combustion chamber 3 above.

Within a space z' between the inner and outer walls is a vertical box or cylinder at which, near its upper end, is connected with the combustion chamber 3 by a horizontal pipe 6, and in line with said pipe I) a second horizontal pipe 0 connects the box with a vertical smoke pipe 03, said pipe 0 being provided with a damper e and the smoke pipe 03 with a damper f.

The lower end of. the cylinder a com- Specification of Letters Patent. Application filedJuly 30, 191 5. Serial'lio. 42,738.

EDWIN QUIN BANGS, or RAcIn Wisconsin.

MEANS FOR INTRODUCING-(AIR INTO: FUnNAcEsQ v r arsaw; 9, 91a

municates with the lower end of the smoke pipe cl througha third horizontal pipe 4 which passes through the outer wall 9 of the furnace. a 1 i q 'By opening the damper e and closing the damper f, the products of combustion will be caused to pass through thepipe 6, across the box a,;through pipe 0 and through the smoke pipe'=d,but by closing damper e and opening damper 7, the products will be caused to pass 'through pipe (5, downward in box a, through pipe 4,, and up andthrough the smoke pipe cl. V

A; horizontal cylindrical pipe section 5 introduced through the outerend' wall of the pipe 4: to a point adjacent to the point discharge it in small streams intothe products of combustion, While passing from the combustion chamber to the smoke pipe, thereby causing the air to thoroughly mingle with the gas arising from the coal and pass ing down through box a, through 1 pipe 4:,

, and smoke pipe The amount of air admitted into the pipe section is regulated by means of a valve 10, and if desired, a'pluralityof baflie plates 11 may be provided interiorly of the pipe section to interrupt and retard the flow of the air through the pipe section.

By introducing the air through the pipe 4 and box a into the furnace or stove at a point above the fire, the oxygen contained in the air will cause the gas from the'coal to immediately ignite before entering the smoke pipe, thus obtaining the additional heat, which under other circumstances, would escape through the smoke pipe.

It will further be seen that heat can be quickly obtained by the use of this device, as when the'fire is first started or a new supply of coal is introduced into the fire box, the gases arising from the coal will ignite and rapidly heat parts coming in contact therewith, while under ordinary circumstances, it is necessary for the fresh coal to be fully ignited before the highest efliciency of heating qualities can be obtained.

When the draft is fixed to cause'the products of combustion to pass downward through the box a, said box serves as an auxiliary or secondary--combustion chamber.

It will further be seen that by introducing the pipe section in the pipe 4:, as shown, the air will be superheated while passing through the pipe section and by placing baffle plates in a short ,pipe section, the passage of air will be sufliciently retarded toattain the necessary heated condition be-. fore being introduced into the gases.

By introducing the air into the furnace in the manner shown, it will causethe gas to ignite immediately upon arising andhefore it has a chance to leave the furnace or accumulate in the combustion chamber, and

' in view of the increased heating capacity,

a forced-draft, required under ordinaryccircumstances, is eliminated, the coal burning under normal conditions, thus obtaining betterconsumption of $116,005.. withless ash.

And it will further be seen that a heating plantof insu flicient size to produce the necessary heat under ordinary circumstances, can-bebrought up to {the proper heating capacity with the use of my device without increasing the consumption of coal and by reason of a less intense heat in the firebox the life of the fire box and grate will becorrespondingly increased. I v

Having thus fully described my inven tion what I claim as new and desire to se- Oopies of this patent may 10c obtained for cure by Letters Patent of the United States 1s r In a furnace comprising an inner Wall inclosing a combustion chamber, and an outer wall inclosing a space surrounding the combHSt1OI1'ChaI11b6I,'II18&I1S for supplylng air to the furnace, comprising a vertical inner box located in the space between the inner and the outergvall, a horizontal pipe connecting the inner box near its upper end with the combustion chamloer,.an outer vertical smoke pipe, a second horizontal pipe extending through theouter .wall and connecting the inner boxnear its upper end with the smoke pipe, a third horizontal pipe 7 ingsin itsends to permit of the passage of the outer air. I

In testimony whereof I have signed my name to this specification-in the presence of two subscribing witnesses. 1

Witnesses:

'NQRA E. KEARNEY, THos. M. KEARNEY, J r.

Washington, 13.6.

' EDWIN QUIN BANGS 

